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ABOUT

My name is Aristides (Aris) Zenonos, and I am a Ph.D. educated Data Scientist with experience in using machine learning to improve business processes. Using my strong technical background, I can exploit data to produce meaningful insights to enable informed decisions. Moreover, I am an experienced programmer and I have worked on supervised and unsupervised machine learning problems. I am skilled in Python, R, Git, scientific coding and research with a strong computational and scientific background from top tier universities.

Contact

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Stackoverflow

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MY SKILLS

DATA SCIENCE

PYTHON

RESEARCH

MY EXPERIENCE

Background & Expertise

SENIOR DATA SCIENTIST, PA CONSULTING, LONDON, UK

Feb 2022 - Present

- Led the delivery and development of data science solutions using an agile methodology
- Utilised Python and R to develop a data-driven solution to triage Non-Value-Added work for a water company leading to a reduction in operational costs by half a million per year.
- Developed and tested Linear Programming Optimisation and Reinforcement Learning algorithms to reduce delays in hot-spot areas of the national rail network.
- Developed autonomous cyber defensive agents using Multi-Agent Reinforcement Learning to protect network integrity and guard against cyber-attacks.
- Enhanced cloud computing abilities by utilising Google Cloud Platform (GCP), enabling efficient data storage and analysis.

DATA SCIENTIST, EBIQUITY, LONDON, UK

Jan 2021 - Feb 2022

- Extract, Transform, Load (ETL) data using Python, R (tidyverse), SQL.
- Deployed model results on dashboards using Shiny Web Apps.

MACHINE LEARNING RESEARCHER, UNIVERSITY OF CYPRUS

Sep 2020 - Dec 2020

- Developed and validated clustering algorithms to improve 5G network operation in hot spot areas.

DATA SCIENTIST, FREELANCER

Sep 2019 - Jan 2020

- Used state-of-the-art machine learning algorithms and techniques for time-series forecasting (e.g. Pandas, Sklearn, Keras, ARIMA).
- Involved in all the stages of data analysis (Data collection, Exploratory Data Analysis, Feature Selection/Extraction, Machine Learning).

GEOPHYSICIST AT CYPRUS HYDROCARBONS COMPANY, CYPRUS

Jul 2019 - Aug 2019

- Employed signal processing techniques (FFT, convolution) using python for multiple prediction
- Broaden seismic processing techniques, worked on industry's leading software (Reveal, Rokdoc) and introduced to HSE, Up-stream/Mid-stream and LNG markets

VISITING RESEARCHER, JOHANNES GUTENBERG UNIVERSITY MAINZ, GERMANY

May 2019 - May 2019

- Installed Fast Marching Tomography (FMTOMO) software package on department's cluster computer
- Presented my study on "P and S wave travel time tomography of the SE Asia-Australia collision zone"

RESEARCH GEOPHYSICIST, TOTAL, ABERDEEN, UK

Mar 2017 - Jul 2017

Topic: Time-shifts vs. Offset and offset-dependent dilation factors

The aim of the project was to analyse the importance of time-shifts vs. Offset. In addition, this will enable the various dilation factor models (R - Factors), which link to geomechanics, to be evaluated.
- Construct a 2D model of the subsurface of the field.
- Perform a ray tracing seismic modelling both for base and monitor surveys.
- Invert for modelled time-shifts using post-stack approach.
- Apply the various dilation factor models
- Link the results of the process performed in number 2-3 with the geomechanical simulation results.
- Calculate 4D time-shifts both with the modelled and real data.

DJANGO WEB DEVELOPER, UCL - SEISMOLAB, LONDON, UK

May 2015 - Sep 2015

Topic: Website for SGLOBE rani model based on Django Framework

The aims and goals of the project were set using the requirements as stated by the client.
- Perform a background research in seismic tomography and other websites for promoting
seismology.
- Compare the advantages and disadvantages of PHP and Django for creating a
dynamic website.
- Develop MATLAB scripts to produce quantitative comparisons between models.
- Learn Generic Mapping Tools (GMT) to produce PostScript tomographic images.
- Become familiar with HTML, CSS and JavaScript to build the front-end interface
of the website.
- Learn Python, Django and MySQL to create a website serving the needs of the
project.
- Engage with Linux and C shell commands to use GMT and Django.
- Explore the options on Amazon Web Services to deploy the website.
- Visualise and analyse the SGLOBE-rani model.
- Generate regional and global tomographic images using GMT in real-time.
- Provide information about data, method and references of the SGLOBE-rani model.
- Deliver a website ready to be published.
- Present the results of the SGLOBE-rani model.

ANDROID SOFTWARE DEVELOPER, UNIVERSITY OF CYPRUS, NICOSIA, CYPRUS

Jul 2014 - Aug 2014

- Introduced to java and android application development by working as a part of a group to implement an android application called Social Activities.

ASSISTANT AUDITOR, ANDERSEN BUSINESS AUDIT SERVICES LTD, LIMASSOL, CYPRUS

Jul 2013 - Aug 2013

- Enhanced accounting knowledge and techniques (vouching) by participating in the auditing of real firms.
- Realisation of the importance of auditing for the presentation of true and fair view of financial statements.

SECOND LIEUTENANT, NATIONAL GUARD OF CYPRUS, CYPRUS

Jul 2009 - Jul 2011

- Developed leadership, supervisory skills, independency, confidence and self-discipline by training a corporal’s guard during military exercises.
- Realisation of the responsibility of authority especially during conditions of pressure.